4 Million Litre Rainwater Harvesting System at Amberley Airbase QLD. |
 
Excavation works |
 
Bio-Infiltration Swale excavation's to collect overland flow which fills
the system |
  
Spreading & levelling of Coarse Washed River Sand across the base |
 
The sand has been spread & levelled across the Base of excavation |
 
Initial installation of 1.5mm HDPE Tanking Membrane |
 
Geotextile is then laid and Modules are positioned |
  
Bio-Infiltration Swale to collect overland flow which fills the System |
  
There are Double Flo Tank Modules placed on top of Geotextile and Liner |
  
Tank depth of
1.7metres is created by two layers of Double Flo Tank Modules |
 
Geotextile wraps around the 2 layers of Flo Tank Modules, to hold the
Tanking Membrane at correct height and add further protection to the
outside of the membrane - coarse washed river sand is used for backfill |
 
Stand Pipes are plumbed into the System for flush points, pump
pick up lines and water level checks. A backfill of Coarse Washed River Sand
covers the top of the system allowing further treatment of water whilst
infiltrating into the system |
 
pictures illustrate the Coarse Washed River Sand over the top of system
with stand pipes insight |
 
Bio-Retention Swale's are Backfilled with Turf installed |
  
Completion of the System with the Sandy Loam Profile finishing to level height |
